Idaho Transportation Department

Idaho 21, Jct. I-84 to Federal Way and Diversion Dam to Sandy Point

Project Facts

Key Numbers: 10531 and 10532

Project Description

These companioned projects rehabilitated the pavement on Idaho 21 from its junction with Interstate 84 to about 50 feet northeast of the westbound Federal Way (Idaho 21) off-ramp, and the two-mile stretch from Diversion Dam to Sandy Point. The project will extend the life of the roadway and create a smoother ride for motorists.

In addition, multiple video detection cameras were installed for both north- and southbound traffic at the Gowen Road/Idaho 21 intersection through a cooperative agreement with ACHD. The eastbound on-ramp to I-84 and westbound off-ramp from I-84 will also be overlayed. The eastbound off-ramp from I-84 may also be reconstructed due to severe rutting and cracking.

The Diversion Dam to Sandy Point portion of the project involved a 1.8-inch overlay utilizing the SALSA method of resurfacing - Stress Absorbing Layer of Straight Asphalt. This helps to minimize roadway surface cracking.

ITD also has a cooperative agreement with Ada County to overlay a portion of the bike path running parallel with the northbound Lane from Diversion Dam towards Sandy Point. This agreement is only for the part of the path that runs on the same elevation with Idaho 21. The bike path will be closed for a few weeks during this work, and every effort will be made to re-open the path as soon as possible.

Planned Construction Schedule

Construction was completed mid-September 2009.

Compliance with Title VI of the Civil Rights Act

The Idaho Transportation Department (ITD) is committed to compliance with Title VI of the Civil Rights Act of 1964 and all related regulations and directives. ITD assures that no person shall on the grounds of race, color, national origin, gender, age, or disability be excluded from participation in, be denied the benefits of, or be otherwise subjected to discrimination under any ITD service, program, or activity. The department also assures that every effort will be made to prevent discrimination through the impacts of its programs, policies, and activities on minority and low-income populations. In addition, the department will take reasonable steps to provide meaningful access to services for persons with Limited English Proficiency.